Brazil's Azul Airlines to Order 30 Embraer Re-Engined E195 Jetliners

Deal Set to Include Purchase Rights on 20 More Planes

Azul Linhas Aereas Brasileiras SA, Brazil's third-largest carrier, is expected Tuesday to announce it signed a letter of intent with Embraer SA, covering firm orders for 30 of the Brazilian plane builder's new version of its E195 jetliner and purchase rights on 20 more.

The agreement, set to be disclosed at the Farnborough International Airshow outside of London, has an estimated value of $3 billion at list price, if all the purchase rights are converted to firm orders. Normally launch customers—and Azul is one—receive significant...